Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'def94c88edc578640a8ff875d1b0a775275bf18ab83f387da56dcf715502a9ee' 
  AND token = 'JTr/XaMc7Q9bwoWbCsh9w4UKSTOg/0Tyfk4PiGGW7lU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}